For comparison with the GCs, some PNe samples are shown. Upper-left panel: entire sample for comparison. Lower-left panel: inner PNe (solid line). We note the striking similarity with the globular clusters (dashed red line). Upper-right panel: outer PNe covering a position angle interval of 270° with the exception of the south-western quadrant. Here the velocity distribution is symmetric with respect to the systemic velocity. This histogram is meant as a supplement to the lower-right panel. Lower-right panel: the south-western quadrant. As in the case of globular clusters (Fig. 5), the velocity distribution is shifted towards lower velocities. The peak at 1600 km s^-1 is not as pronounced as in the case of globular clusters.